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''Vincelestes'' ("Vince’s thief") is an extinct genus of actively mobile mammal, that lived in what would be South America during the Early Cretaceous from 130—112 mya, existing for approximately .〔(PaleoBiology Database: ''Vincelestes'', basic info )〕 ''Vincelestes neuquenianus'' is the only species known to date. Specimens were found at La Amarga Formation of southern Neuquén Province, Argentina. Only nine individuals were recovered from this site. The back teeth of ''Vincelestes'' were similar to those of therians in that they were capable of cutting and grinding. This enabled them to process food more efficiently. Although not the direct ancestor of therians, ''Vincelestes'' is important because it gives us an idea of what the ancestor of both placental and marsupial mammals might have looked like, and also gives an indication of when these mammals may have originated. == References == * Turner A. (2004). National Geographic Prehistoric Mammals. Firecrest Books Ltd., p 46 * Kielan-Jaworowska Z., Cifelli R. & Luo Z. (2004). Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure. Columbia University Press, p 399. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vincelestes」の詳細全文を読む スポンサード リンク
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